Drain fitting



F. G. BROTZ Nov. 28, 1933.

DRAIN FITTING Filed Feb. 13, 1933 INVEN 'OR 07 TTORNEY 7 I which must be used to complete the installation I Patented Nov. 28, 1933 oNrrEo STATES PATENT o rrics Frank ili ot z f i sl jli, Wis.

Application February 13,1933. Serial No. 656,521

' 3 Claims. (01. 4-199) My 'invent'ionrelates to improvements in drain fittings for sanitary plumbing fixtures of enameled cast iron, and the objects of my improvement are, first, to provide a construction wherein .the overflow channel may be of cast iron, thereby reducing the amount of relatively expensive brass of the fixture; second, to construct said overflow channel so that it may be cast separately from the fixture and welded thereon so as to form substantially anintegral part thereof; and third, to

provide means for adapting said overflow to tubs of varying pitches.

I attain these objects by the construction illus. trated in the accompanying drawing, in which Figure l is a vertical sectional view of a bath tub having the overflow attached thereto; Fig. 2, a similar view showing the adaptability of the overflow to tubs of varying pitches; Fig. 3, a front view of the overflow; and Fig. 4, a plan view thereof.

Similar numerals refer to similar parts throughout the several views.

The improvement is particularly, though not exclusively, adapted to castiron enameled bath tubs, and is herein illustrated and described with.

particular reference to its use in that connection.

The tub l is provided with the overflow opening 2 and the drain opening v3. The overflow opening 2 is beveled around its circumference as at 4, the bevel flaring outwardly toward the exterior of the tub, and the drain opening 3 is likewise beveled at 5. v

The overflow channel 6 is cast or formed separately from the tub I and is designed to fit over and enclose the overflow opening 2 and the drain opening 3. The overflow channel 6 is provided with a substantially annular portion 7 adapted to abut the tub 1 circumjacent the overflow opening 2 and a substantially annular portion 8 adapted to abut the tub 1 circumjacent the drain opening 3. The abutting portion 8 is beveled at 9 to form, with the bevel-5, a substantially V-shaped groove or notch. g

The abutting portion '7 is likewisebeveled at 10 to form, with the bevel '4, a substantially V-shaped groove or notch.

' tending or bossed portion 11 circumjacent the drain opening 3. The abutting portion 8 of the overflow channel 6 is raised somewhat and forms, in effect, a boss somewhat larger in diameter than the boss 11, as will be seen in Fig. 1. This permits a certain amount of lateral movement of the overflow channel without preventing the formation of the groove between. the bevel V9 and the bevel 5. The portion 10 is preferably beveled at a rather acute angle so that the end of the abutting portion 7 may be ground back a oon siderable distance, as hereinafter described, without entirely removing the beveled surface 10.

The pitch of the end wall of the tub, consequently the horizontal distance between the drain opening and overflow opening, varies in diiferent styles of tubs. As will be seen in Fig.2, the overflow channel may be adapted to tubs of varying pitches by grinding off the portion '1' to fit the tub.

The groove between the tub and the overflow channel not only facilitates the formation of a good welded joint but makes it possible to weld the overflow channel to the tub without having any protuberances due to welded metal.

With this construction I am able to avoid the warping which ordinarily takes place when cast' iron articles such as this are welded, a difficulty that has hitherto made the welding of a cast iron overflow to the tub impracticable. To avoid this warping I first weld at spaced intervals around the circumference of the groove sufliciently to fill the groove at those intervals, then allow the casting to cool, and finish the welding by filling the remaining portion of the groove with welded metal. It will beunderstood that the welding may be carried on by any of the well known welding processes.

It will be understood that the tub and overflow are enameled as a whole, and that it is desirable to enamel the inside of the overflow to prevent rusting. I prefer to accomplish this as follows:

Tubs and other large plumbing fixtures are usually enameled by the so-called dry process, which comprises coating the. ware with a first or ground coat ordinarily appliedvin liquid form by dipping, brushing, spraying, etc., and after the Ware is dried, heating to a white heat and applying one or more cover coats to the heated casting. I contemplate enameling the inside of the overflow with the ground coat only, as by spraying or pouring the liquid enamel into the overflow. The tub may then be dried and enameled in the usual manner and the covering or ground coat will be found sufficient to prevent objectionablerusting.

The overflow channel 6 is provided with the outlet 12 axially aligned with the drain opening 3 and threaded to receive the drain pipe 13. In addition to the downwardly opening outlet 12 the overflow channel is also provided with a rearwardly opening threaded outlet 14 and a forwardly opening threaded outlet 15, the latter being ofiset laterally from the outlet 13 and having a slight downward pitch so that a pipe with an elbow attached can be turned without interfering with the tub. One of these three outlets is selected for connection with the drain piping, the other two'being closed by plugs 16 of the conventional type.

Any suitable type of fitting may be used, such as that illustrated in Figure 1, wherein l7 indicates a valve seat attached to the tub by the nut 18 and fitted with'the tubular valve 19. The lower end of the valve 19 has threaded connection with the ring 20 which forms a part of the upwardly extending bent rod 21 and has pivotal connection with the crank pin 22 attached to the rock shaft 23. The rock shaft 23 is journaled in the overflow escutcheon 24 and is provided with the operating handle 25.

My construction eliminates considerable expensive brass, reduces the time required for installation, and is thoroughly practical and sanitary.

I claim:

1. In a drain fitting for a plumbing fixture, the combination of an overflow opening in said fixture, a bevel on said overflow opening, a drain opening in said fixture, a bevel on said drain opening, an overflow channel cast separately from said fixture and designed to it over and enclose said overflow opening and said drain opening, said overflow channel comprising a beveled portion abutting the aforesaid bevel on the overflow opening and forming a substantially V-shaped groove therewith and a beveled portion abutting the aforesaid bevel on the drain opening and forming a substantially V-shaped groove therewith.

2. In a drain fitting for a plumbing fixture, the combination of an overflow opening in said fixture, said overflow opening being flared outwardly toward the exterior of the fixture, a drain opening in said fixture, said drain opening being flared outwardly toward the exterior ofthe fixture, an overflow channel cast separately from said fixture and designed to fit over and enclose said overflow opening and said drain opening and to abut said fixture circumjacent said overflow opening and said drain opening, said abutting portions being beveled whereby to form, with the aforesaid flared portions of the drain opening and the overflow opening, substantially V- shaped grooves.

3. In a drain fitting for a plumbing fixture, the combination of an overflow opening in said fixture, a drain opening in said fixture, an overflow channel cast separately from said fixture and designed to fit over and enclose said overflow opening and said drain opening and to abut said fixture circuinjacent said overflow opening and said drain opening, and a welding notch positioned at the points of juncture of said overflow channel and said fixture.

FRANK G. BROTZ. 

